Interference Lab(Filter)

Thread Starter

bham1307

Joined Oct 2, 2008
4
Design a circuit to filter 100 kHz and pass 2 KHz. The test circuit should contain a 2 KHz oscillator, a 100KHz oscillator, a filter circuit, and a 6 dB amplifier circuit.

Basically I need to create a low pass or bandpass ciruit to pass the desired frequency and reject the other. I originally went with a bandpass circuit. I am really confused to be honest though, and need some help getting started
 

mik3

Joined Feb 4, 2008
4,846
Do you want to make a passive filter (use inductors, capacitors and resistors) or an active filter (use op-amp, resistors and capacitors)?
 

beenthere

Joined Apr 20, 2004
15,808
The good news is that the 741 has such a poor response that you won't need much of a filter to eliminate the 100KHz.
 

Thread Starter

bham1307

Joined Oct 2, 2008
4
Thanks, this site was very helpful helping me get my correct values. The project is due thursday, so i may be in touch some tomorrow, after talking with my instructor. Thanks again!
 

mik3

Joined Feb 4, 2008
4,846
Beenthere, i like your point of view about how to use the 741 as simple low pass filter.
 
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